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Homework Help: Corotation speed and energy

  1. Jan 15, 2016 #1
    1. The problem statement, all variables and given/known data
    I need help with a problem regarding the corotational speed en energies for oxygen ions around Jupiter. I'm stuck

    2. Relevant equations
    See below

    3. The attempt at a solution
    I know that the maximum magnetospheric plasma density is about 1000-50000 cm^-3.
    I also know that the formula for the circumference of Jupiter (or any other planet if I'm correct) is: 2*pi*L*Rj.
    The L values should be between 1-10.
    The critical velocity has a formula and it is: (v_crit)^2=Omega_gyro*Omega_rotation*Rj^2*L^2 and I believe that I need to use this. In that case, I need to know how to calculate Omega_gyro and Omega_rotation (which are the rotational frequencies). What should I do?
    When it comes to the energy, I believe that I can use E=mv^2/2 , where m is the mass of the ion. Correct?

  2. jcsd
  3. Jan 20, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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